ML22Q294 [ROHM]

ML22Q274/ML22Q284/ML22Q294有内置闪存,用于存储语音代码数据,ML22Q274可以通过时钟同步串行接口控制,ML22Q284可以独立控制,ML22Q294可以通过I2C控制。 车载质量的语音合成LSI。ML22Q274配备了一个D类扬声器放大器,使得在单个芯片上实现语音再现的解决方案成为可能。;
ML22Q294
型号: ML22Q294
厂家: ROHM    ROHM
描述:

ML22Q274/ML22Q284/ML22Q294有内置闪存,用于存储语音代码数据,ML22Q274可以通过时钟同步串行接口控制,ML22Q284可以独立控制,ML22Q294可以通过I2C控制。 车载质量的语音合成LSI。ML22Q274配备了一个D类扬声器放大器,使得在单个芯片上实现语音再现的解决方案成为可能。

语音合成 时钟 放大器 存储 闪存
文件: 总46页 (文件大小:2218K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
FEDL22Q294-03  
Issued: October 4, 2021  
ML22Q294  
ADPCM Speech Synthesis LSI for Automotive  
GENERAL DESCRIPTION  
ML22Q294 is a speech synthesis LSI supporting an in-vehicle quality that incorporates Flash for storing voice code data,  
and can be controlled with a I2C interface.  
By integrating D-class speaker amplifier, solution required for voice output is made possible with single chip.  
Playback time(Maximum number of phrases 30 When a phrase is selected)  
Maximum playback time (sec) (at fs = 6.4 kHz)  
Product name  
Flash capacity (bit)  
4bitADPCM2  
27.6  
16bitPCM  
6.9  
ML22Q294  
692K  
Notes: Flash capacity shows the numerical value of only a voice area  
Speech synthesis method:  
4-bit ADPCM2  
8-bit Nonlinear PCM  
8-bit PCM , 16-bit PCM  
(Method can be specified for each phrase)  
● Flash capacity:  
● Sampling frequency (Fs):  
692 Kbit (30 phrases selection),688 Kbit (62 phrases selection)  
8.0/16.0/32.0 kHz, 6.4/12.8/25.6 kHz, 10.7/21.3 kHz  
(Can be specified for each phrase)  
D-class amplifier (driven by 8 Ω)  
I2C interface  
30 phrases or 62 phrases  
● Speaker driving amplifier:  
CPU command interface:  
Maximum number of pharases:  
● Disconnection detection function /Speaker pin short detection function  
● Source oscillation frequency:  
● Power supply voltage:  
● Flash memory rewritable time:  
● Operating temperature range:  
● AEC-Q100:  
4.096 MHz (Typ) (internal)  
2.0 to 5.5 V  
80 times  
–40OC to +105OC  
Compliant  
● Package:  
20-pin plastic TSSOP  
ML22Q294-NNNTD/ML22Q294-xxxTD  
(xxx: ROM code No.)  
1/46  
FEDL22Q294-03  
ML22Q294  
The following table shows the differences from ML22Q274, ML22Q284.  
Parameter  
MCU interface  
ML22Q294  
I2C  
ML22Q274  
Clock synchronization Serial  
ML22Q284  
Standalone  
692 Kbit  
692 Kbit (when 30 phrases  
are selected)  
Flash capacity  
688 Kbit (when 62 phrases  
are selected)  
4-bit ADPCM2  
8-bit Nonlinear PCM  
8-bit PCM  
Playback method  
16-bit PCM  
Maximum number of phrases:  
Sampling frequency (kHz)  
30/62  
30  
6.4/8.0/10.7/12.8/  
16.0/21.3/25.6/32.0  
4.096 MHz (internal  
oscillation)  
Clock frequency  
Low-pass filter  
FIR interpolation filter  
D-class amplifier  
Speaker driving amplifier  
Speaker driving amplifier output  
load  
8Ω  
1 W (Ta = -40 to +85°C)  
Speaker driving amplifier output  
voltage  
0.8 W (Ta = -40 to +105°C)  
Edit ROM function  
Volume control  
Yes  
32 levels  
4 ms to 1024 ms  
(4 ms/step)  
Silence insertion  
Repeat function  
Yes  
Power supply voltage  
Operating temperature range  
Package  
2.0 to 5.5 V  
-40 to +105°C  
20-pin TSSOP  
2/46  
FEDL22Q294-03  
ML22Q294  
BLOCK DIAGRAMS  
DVDD  
Address  
Regulator  
16bit  
Multiplexer  
692Kbit  
Flash  
VPP  
DGND  
Controller  
VDDL  
Phrase  
Address Latch  
16bit  
Address Counter  
ADPCM/PCM  
Synthesizer  
I2C  
CSB  
SCL  
SDA  
Interface  
LPF  
TEST  
SPVDD  
SPGND  
Timing  
Controller  
BUSYB  
D-class  
Speaker  
Amplifier  
OUTPUT  
Interface  
SPM  
SPP  
OSC  
(internal)  
RESET_N  
3/46  
FEDL22Q294-03  
ML22Q294  
PIN CONFIGURATIONS (TOP VIEW)  
20-Pin Plastic TSSOP  
RESET_N  
1
2
20  
SPP  
SPM  
19 TEST  
18 VPP  
3
SPGND  
SPVDD  
4
17  
NC  
BUSYB  
DGND  
VDDL  
5
16 NC  
15 SCL  
6
7
14  
13  
12  
11  
SDA  
CSB  
DVDD  
NC  
8
9
NC  
NC  
10  
NC  
NCUnused pin  
4/46  
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ML22Q294  
PIN DESCRIPTION  
Initial value  
(At the  
RESET_N (At standby)  
Input)  
Initial value  
Pin  
Symbol  
I/O  
Description  
1
2
3
SPP  
SPM  
O
O
Hi-Z  
Hi-Z  
Hi-Z  
Hi-Z  
Positive (+) output pin of the speaker amplifier built-in  
Negative (-) output pin of the speaker amplifier built-in.  
SPGND  
Ground pin for the speaker amplifier.  
Power supply pin for the speaker amplifier  
Connect a bypass capacitor of 0.1 μF or more between this pin and  
SPGND pin.  
4
SPVDD  
O
BUSY output pin. When BUSYB use mode is set, the "L" level is  
outputted during playback. When disconnection is detected with  
disconnection detection function, the "L" level is outputted.  
BUSYB unused mode and logic inversion can be set with Speech  
LSI Utility.  
5
BUSYB  
Hi-Z  
1
6
7
DGND  
VDDL  
Digital ground pin.  
Regulator output pin for internal logic circuitry.  
Connect a capacitor of 10 μF or more between this pin and DGND  
pin  
Digital power supply pin.  
Connect a capacitor of 0.1 μF or more between this pin and DGND  
pin.  
8
DVDD  
CSB  
I
1
1
Chip select pin in a case where CSB use mode is set.  
Internal oscillation starts in response to turning “H” level down to “L”  
level, and input through I2C becomes available.  
Fix to “H” level or “L” level when CSB use mode is not set.  
I2C serial data input pin.  
13  
Used for writing slave address and data.  
14  
15  
SDA  
SCL  
I
I
1
1
1
1
Pull-up resistor must be inserted between this pin and DVDD  
I2C serial clock input pin.  
Pull-up resistor must be inserted between this pin and DVDD  
Power supply pin for rewriting Flash memory.  
18  
19  
VPP  
I
0
0
Fix this pin to GND except when rewriting Flash memory  
TEST  
Test pin. Fix this pin to DGND.  
Reset pin.  
Input “L” level for initialization, when power is turned on, or when  
voltage falls below recommended operation power supply voltage  
range. After the power supply voltage is stable, drive this pin to “H”  
level.  
20  
RESET_N  
I
0
1
9
10  
11  
12  
16  
17  
Unused pin.  
N.C.  
Leave this pin open.  
5/46  
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ML22Q294  
ABSOLUTE MAXIMUM RATINGS  
(DGND = 0 V)  
Unit  
Parameter  
Symbol  
Condition  
Rating  
DVDD  
SPVDD  
Power supply voltage  
-0.3 to + 7.0  
V
V
Internal logic power supply  
voltage  
VDDL  
-0.3 to +3.6  
Ta = 25 °C  
Flash power supply voltage  
Input voltage  
VPP  
VIN  
PD  
-0.3 to +9.5  
-0.3 to VDD +0.3  
1
V
V
Power dissipation  
W
Applied to pin other than SPP or  
SPM  
ISC1  
-12 to +11  
mA  
Output short-circuit current  
Storage temperature  
ISC2  
SPP pin, SPM pin  
-
600  
mA  
°C  
TSTG  
-55 to +150  
RECOMMENDED OPERATING CONDITIONS  
(DGND = 0 V)  
Unit  
Parameter  
Symbol  
Condition  
-
Range  
2.0 to 5.5  
DVDD  
SPVDD  
Power supply voltage  
V
Flash memory write  
Flash memory write  
2.7 to 5.5  
7.7 to 8.3  
Flash power supply voltage  
Flash memory rewrite cycles  
VPP  
V
N
-
80  
times  
TOP1  
TOP2  
-
-40 to +105  
0 to +40  
Operating temperature range  
°C  
Flash memory write  
6/46  
FEDL22Q294-03  
ML22Q294  
ELECTRICAL CHARACTERISTICS  
DC Characteristics  
DVDD = SPVDD = 2.0 to 5.5 V, DGND = SPGND = 0 V, Ta = -40 to +105°C  
Parameter  
“H” input voltage  
“L” input voltage  
“H” output voltage 1  
“L” output voltage 1  
“H” input current 1  
Symbol  
VIH  
VIL  
VOH1  
VOL1  
IIH1  
Condition  
Min.  
0.7 x DVDD  
Typ.  
Max.  
DVDD  
0.3 x DVDD  
Unit  
V
V
V
V
-
-
-
-
-
-
-
0
IOH = -0.5 mA  
IOL = 0.5mA  
VIH = DVDD  
VIH = DVDD  
TEST pin  
VIL = DGND  
VIL = DGND  
RESET_N pin  
DVDD-0.5  
-
0.5  
1
-
-
µA  
“H” input current 2  
“L” input current 1  
“L” input current 2  
IIH2  
IIL1  
IIL2  
0.02  
-1  
0.3  
-
1.5  
-
mA  
µA  
-1.5  
-0.3  
-0.02  
mA  
VIL = DGND  
“L” input current 3  
“H” output current 1  
IIL  
-250  
-
-30  
-
-2  
1
µA  
µA  
CSB terminal pull-up input is set  
VOH= DVDD= SPVDD  
(High impedance)  
BUSYB, SPP, SPM pin  
VOH= DVDD  
IOOH1  
IOOH2  
IOOL1  
IOOL2  
“H” output current 2  
“L” output current 1  
“L” output current 2  
(Nch Open drain)  
BUSYB pin  
VOL=DGND=SPGND  
(High impedance)  
BUSYB, SPP, SPM pin  
VOL=DGND  
-
-
-
-
1
-
µA  
µA  
µA  
-1  
-1  
(Pch Open drain)  
BUSYB pin  
-
No output load  
DVDD= SPVDD=3.0V  
No output load  
DVDD= SPVDD=5.0V  
IDD1  
IDD2  
-
-
-
4.0  
6.0  
3.0  
6.0  
10  
Supply current during  
playback  
mA  
Awaiting command  
supply current  
IDDC1  
DVDD=SPVDD=5.0V  
5.0  
mA  
µA  
IDDS1  
IDDS2  
IDDS3  
Ta ≤ 40°C  
Ta ≤ +85°C  
Ta ≤ +105°C  
-10 to +50°C  
-
-
-
0.5  
0.5  
0.5  
3.0  
8.0  
16.0  
4.158  
Standby supply current  
Oscillation frequency  
4.034  
4.096  
fOSC  
MHz  
-40 to +105°C  
3.973  
4.096  
4.219  
Characteristics of Analog Circuitry  
DVDD = SPVDD = 2.0 to 5.5 V, DGND = SPGND = 0 V, Ta = -40 to +105°C  
Parameter  
Symbol  
Condition  
Min.  
Typ.  
Max.  
Unit  
SPM, SPP output load  
resistance  
RLSP  
-
8
-
-
Ω
SPVDD = 5.0 V, Sin wave f = 1 kHz  
RLSP = 8 Ω, THD ≥ 10%  
Ta = -40 to +85°C  
SPVDD = 5.0 V, Sin wave f = 1 kHz  
RLSP = 8Ω, THD ≥ 10%  
Ta = -40 to +105°C  
-
-
1.0  
0.8  
-
-
W
W
Speaker amplifier output  
voltage  
PSPO  
7/46  
FEDL22Q294-03  
ML22Q294  
AC Characteristics  
Parameter  
DVDD = SPVDD = 2.0 to 5.5 V, DGND = SPGND = 0 V, Ta = -40 to +105°C  
Symbol  
tRST  
Condition  
Min.  
100  
0
Typ.  
Max.  
-
Unit  
µs  
RESET_N input pulse width  
-
-
-
-
-
Start time SPVDD after starting DVDD  
Initialization time after reset release  
SCL Clock frequency  
tVDD  
-
-
ns  
tINIT  
-
-
65  
400  
ms  
kHz  
tSCL  
I2C Fast mode  
I2C Fast mode  
0
Hold time (repeated) START condition  
After this period, the first clock pulse is generated.  
SCL clock “L” level pulse width  
SCL clock “H” level pulse width  
Setup time for repeated [START] condition  
Data hold time: For I2C bus devices  
Data setup time  
tHD;STA  
0.6  
-
-
µs  
tLOW  
tHIGH  
tSU;STA  
tHD;DAT  
tSU;DAT  
tR  
I2C Fast mode  
I2C Fast mode  
I2C Fast mode  
I2C Fast mode  
I2C Fast mode  
I2C Fast mode  
I2C Fast mode  
I2C Fast mode  
I2C Fast mode  
1.3  
0.6  
0.6  
0
-
-
-
-
-
-
-
-
-
-
-
µs  
µs  
µs  
µs  
ns  
ns  
ns  
µs  
pF  
-
0.9  
-
100  
20  
20  
0.6  
-
SDA and SCL signal rise time  
300  
300  
-
SDA and SCL signal fall time  
tF  
STOP condition setup time  
tSU;STO  
Cb  
Capacitive load for each bus line  
Noise margin at a “L” level in each device connected  
(including hysteresis)  
400  
0.1 x  
DVDD  
VnL  
VnH  
tSP  
I2C Fast mode  
I2C Fast mode  
I2C Fast mode  
-
-
-
-
-
V
V
Noise margin at a “H” level in each device connected  
(including hysteresis)  
0.1 x  
DVDD  
Pulse width of spikes which must be suppressed by  
the input filter  
0
50  
ns  
Clock stretch time  
tCKST  
tPUP1  
tVCYC  
-
-
-
-
-
-
-
1
-
ms  
ms  
ms  
Data reception possible time, after an oscillation start  
Playback time  
2
20  
-
BUSYB change time from "H" to "L", after a command  
is inputted  
tCB  
-
-
-
400  
µs  
CSB “H” level pulse width  
tCSW  
tOSST  
tNCM1  
CSB use mode  
1
-
-
-
-
-
500  
-
ms  
µs  
Oscillation stop time, after playback  
Next command transmit time  
-
-
0
ms  
Next command transmit time in the case of the  
playback  
tNCM2  
tCMS  
tDCDS  
tDCDE  
tSD  
-
-
500  
1.5  
-
-
-
-
-
-
10  
-
ms  
µs  
ms  
s
When CSB use mode is  
not set  
Next command input time after transition to standby  
Disconnection judging by the DISCONNECT  
command start time  
-
-
-
-
Disconnection judging by the DISCONNECT  
command end time  
1
BUSYB change time from "L" to "H", after Over-current  
detection of a speaker amplifier  
-
80  
µs  
Processing time before playback start  
Processing time after playback start  
tPLBF  
tPLAF  
-
-
0.3  
-
-
2.1  
1.2  
ms  
ms  
0.15  
Fade-out time at Change Immediately mode or  
Change Immediately Once mode  
tFDO  
-
-
22  
-
ms  
Note: Output pin load capacitance = 45 pF (max.)  
8/46  
FEDL22Q294-03  
ML22Q294  
FUNCTIONAL DESCRIPTION  
I2C interface  
Serial interface that is compliant with I2C bus specification. It supports Fast mode and enables data reception at 400 kbps.  
SCL and SDA pins are used to input the command data.  
Pull-up resister should be connected to SCL pin and SDA pin.  
For the master on the I2C bus to communicate with this device (: slave), input the slave address with the first seven bits  
after setting the start condition. The slave address can be set using the Speech Utility. The eighth bit of slave address is  
used to set the direction (: write or read) of communication. If the eighth bit is “0” level, it is write mode from master to  
slave. And, if the eighth bit is “1” level, it is read mode from master. Then, the communication is made in the unit of byte.  
Acknowledge is needed for each byte.  
Communication flow/timing chart with I2C is described below.  
SStart condition  
AAcknowledge  
Command DataCommand  
PStop condition  
Timing chart for 1-byte configuration command input  
SCL  
A6 A5 A4 A3 A2A1 A0 W A D7 D6D5 D4 D3D2 D1 D0 A  
SDA  
Slave Address  
A
Command Data  
A
P
S
Timing chart for 2-byte configuration command input  
SCL  
D15  
D13  
D11  
A6 A5 A4 A3 A2A1 A0 W A  
Slave Address  
D9 D8 A D7 D6D5 D4 D3D2 D1 D0 A  
Command Data Command Data  
SDA  
D14 D12  
D10  
P
A
A
A
S
Slave address can be set up with the option screen of Speech LSI Utility.  
Please refer to "Code Option Setting Item" for details.  
9/46  
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ML22Q294  
Speech synthesis method  
Supporting four types of speech synthesis methods, which are 4bit ADPCM2, 8-bit nonlinear PCM, 8-bit PCM, and  
16-bit PCM. Any of these can be selected based on the characteristics of the voice to be played back.  
Speech synthesis Compression  
Suitable waveform  
Characteristics  
method  
rate*1  
Unique scheme which is a refined version of 4bit  
4-bit ADPCM2  
1/4  
Normal voice sound wave ADPCM Offers higher sound quality with better  
waveform followability.  
A part around the center of the waveform is played  
back with a sound quality equivalent to 10 bits.  
8-bit Nonlinear PCM  
1/2  
Sound including high  
frequency components  
(such as sound effects)  
8-bit PCM  
1/2  
1
Normal 8-bit PCM.  
16-bit PCM  
Normal 16-bit PCM.  
Note 1: When the same sampling frequency is used.  
Memory Allocation and Creating Voice Data  
The voice code data consists of a voice management area, a voice data area, and an edit ROM area.  
The voice control area manages voice data of 30 phrases or 62 phrases.  
The voice area contains actual waveform data.  
The edit ROM area contains data for effective use of voice data. For the details, refer to the section of “Edit ROM  
Function”. The edit ROM area only available when the edit ROM is used.  
The ROM data is created using Speech LSI Utility.  
The 30 or 62 phrases can be switched using the Speech LSI Utility.  
Please refer to a "Code Option Setting Item" for details.  
Voice code data configuration(30 phrase selection)  
Voice code data configuration(62 phrase selection)  
0x00000  
0x00000  
Voice control area  
0x001FF  
0x00200  
Voice control area  
0x003FF  
0x00400  
Voice data area /  
Edit ROM area*1  
Voice data area /  
Edit ROM area*1  
0x159FF  
0x159FF  
*1Edit ROM area depends on creation of the data  
10/46  
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ML22Q294  
Playback Time and Flash Capacity  
The playback time depends on the memory capacity, sampling frequency, and the playback method. The equation to  
know the playback time is shown below. But this is not applied if the edit ROM function is used.  
1.024 × Voice data area/Edit ROM area)(Kbit)  
Playback time [sec]=  
Sampling frequency [kHz] × Bit length  
(Bit length is 4 at the 4-bit ADPCM2 and 8/16 at the PCM.)  
In the case that the sampling frequency is 8 kHz, algorithm is 4-bit ADPCM2, the playback time is approx. 22.1 seconds.  
1.024 × 692Kbit)  
22.1 [sec])  
Playback time=  
8kHz× 4(bit)  
Make the playback time of one phrase more than 20 msec.  
11/46  
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ML22Q294  
Edit ROM function  
The edit ROM function makes it possible to play back multiple phrases in succession. The following functions are set  
using the edit ROM function:  
Continuous playback: There is no limit to set the number of times of the continuous playback. It depends on the  
Flash capacity only.  
Silence insertion function: 4 ms to 1,024 ms  
*Note: Silent insertion time varies for ±1 ms depends on the sampling frequency.  
An independent phrase generated by edit ROM shall be 20 ms or longer.  
It is possible to use voice ROM effectively to use the edit ROM function.  
An example of the ROM structure, in a case of using the edit ROM function is as follows.  
Example 1) Phrases using the Edit ROM Function  
Phrase 2  
Phrase 3  
Phrase 4  
Phrase 5  
Phrase 6  
Phrase 7  
A
B
C
D
D
A
E
B
C
D
D
E
D
A
B
D
Silence (4 ms)  
E
C
Silence (20 ms)  
Example 2) Structure of the ROM storing contents of Example 1  
Voice control area  
0x00200  
A
B
D
C
Voice data area  
E
Edit ROM area*1  
*1Information on phrases 2 to 7 stored  
0x159FF  
12/46  
FEDL22Q294-03  
ML22Q294  
Playback mode setup  
Five playback modes are available. Can be set up for every phrase.  
Set when the voice code data is generated.  
Play Once mode  
This mode is playback once.  
All the commands become invalid during playback.  
Phrase(m)  
Phrase(n)  
Slave  
Address  
Slave  
Address  
SDA  
BUSYB*1  
Good morning。  
Voice output  
Status  
Awaiting  
command  
Playing Phrase(m)  
Standby  
*1When used with default “H” level, CMOS output  
Standby  
Command  
Next command must be input in the standby state after the playback ends.  
Phrase(m)  
Phrase(n)  
Slave Command  
Slave Command  
Address data  
SDA  
Address  
data  
BUSYB*1  
Voice output  
Status  
Good morning。  
Good agternoon。  
Awaiting  
Awaiting  
Playing Phrase(m)  
Playing Phrase(n)  
Command Standby  
command  
command  
Command  
Standby  
Standby  
*1When used with default “H” level, CMOS output  
Scheduled Play Once mode  
This mode is playback once.  
When the next phrase is inputted during playback, after playback of the present phrase ends, playback of the next phrase  
starts.When the following phrase is inputted into playback, after playback of the present phrase is completed, playback of  
th following phrase starts.  
Phrase(n)  
Phrase(m)  
Slave  
Address  
Comman  
dadta  
Slave  
Address  
Comman  
dadta  
SDA  
BUSYB*1  
Voice output  
Good morning。  
Good agternoon。  
Awaiting  
command  
Playing Phrase(m)  
Playing Phrase(n)  
Status  
Standby  
*1When used with default “H” level, CMOS output  
Command  
Standby  
When a plurality of commands are input, the last command input at the end of the phrase is valid.  
In the following case, the phrase (n) is not played back because the last command is STOP command.  
Phrase(m)  
Phrase(n)  
STOP  
Slave  
Address  
Comman  
dadta  
Slave  
Address  
Comman  
dadta  
Slave  
Address  
Comman  
dadta  
SDA  
BUSYB*1  
Voice output  
Good morning。  
Awaiting  
command  
Playing Phrase(m)  
Status  
Standby  
*1When used with default “H” level, CMOS output  
Command  
Standby  
13/46  
FEDL22Q294-03  
ML22Q294  
Change Immediately Once mode  
This mode is for playing back once.  
When the following phrase is inputted into playback, playback of the present phrase is ended on the way, and playback  
of the following phrase starts.  
Phrase(m)  
Phrase(n)  
Slave Command  
Slave Command  
SDA  
Address  
data  
Address  
data  
BUSYB*1  
Voice  
Good morning  
Good agternoon  
Playing Phrase(n)  
Awaiting  
command  
Playing Phrase(m)  
Status  
Fading out  
Standby  
*1When used with default “H” level, CMOS output  
Command  
Standby  
When a plurality of commands are input, the last command input at the end of the phrase is valid.  
In the following case, the last input phrase (o) is played back.  
Phrase(m)  
Phrase(n)  
Phrase(o)  
Slave Command  
Slave Command  
Slave Command  
SDA  
Address  
data  
Address  
data  
Address  
data  
BUSYB*1  
Good morning  
Good evening  
Playing Phrase(o)  
Voice  
Awaiting  
command  
Playing Phrase(m)  
Standby  
Fading out  
Status  
*1When used with default “H” level, CMOS output  
Command  
Standby  
Scheduled Play mode  
Once the playback starts, it is repeated until the next command is input.  
The next command input during the playback is executed after the playback ends.  
When a plurality of commands are input, the last command input at the end of the phrase is valid, as in Scheduled Play  
Once.  
STOP command  
Phrase(m)  
Slave Command  
Address data  
Slave Command  
Address data  
SDA  
BUSYB*1  
Voice  
Good morning  
Playing Phrase(m)  
Good morning  
Playing Phrase(m)  
Awaiting  
command  
Status  
Standby  
Command  
Standby  
*1When used with default “H” level, CMOS output  
Change Immediately mode  
Once the playback starts, it is repeated until the next command is input.  
When the next command is input, the phrase being played back is terminated, and the next command is executed.When  
the following command is inputted into playback, playback of the present phrase is ended on the way, and playback of  
the following command starts.  
When a plurality of commands are input, the last command input at the end of the phrase is valid, as in Change  
Immediately Once.  
STOP command  
Phrase(m)  
Slave Command  
Address data  
Slave Command  
Address data  
SDA  
BUSYB*1  
Voice  
Good morning  
Playing Phrase(m)  
Good morning  
Awaiting  
command  
Playing Phrase(m)  
Status  
Standby  
Command  
Fading out  
*1When used with default “H” level, CMOS output  
Standby  
14/46  
FEDL22Q294-03  
ML22Q294  
Volume setup function  
Each phrase can set up the volume setup.  
The volume is set when voice code data is generated and when PHRASE command is input.  
For the setting of volume when PHRASE command is input, refer to “PHRASE command” in Description of Command  
Functions.  
The relationship between the setting and volume at the time of generating voice code data is as follows.  
Value  
00h  
01h  
02h  
03h  
04h  
05h  
06h  
07h  
08h  
09h  
Volume [dB]  
+2.98  
Value  
0Ah  
0Bh  
0Ch  
0Dh  
0Eh  
0Fh  
10h  
11h  
12h  
13h  
14h  
Volume [dB]  
-0.41  
Value  
15h  
16h  
17h  
18h  
19h  
1Ah  
1Bh  
1Ch  
1Dh  
1Eh  
1Fh  
Volume [dB]  
-6.87  
+2.70  
-0.83  
-7.79  
+2.40  
-1.28  
-8.82  
+2.10  
-1.75  
-9.99  
+1.78  
-2.25  
-11.34  
-12.94  
-14.90  
-17.44  
-21.04  
-27.31  
OFF  
+1.45  
-2.77  
+1.11  
-3.34  
+0.76  
-3.94  
+0.39  
-4.58  
+0.00  
-5.28  
-6.04  
Function of setting wait time before and after playback (WS1, WS2, WS3, WS4)  
Wait time before playback (WS1, WS2) and after playback (WS3, WS4) can be set for each phrase.  
Set when the voice code data is generated.  
CSB  
Phrase  
Slave  
Address  
SDA  
BUSYB*1  
WS1 WS2  
WS3 WS4  
SPP/SPM  
Status  
Hi-Z  
Standby  
Playing  
Standby  
Command  
Awaiting  
oscillation stop  
Awaiting  
command  
*1When used with default “H” level, CMOS output  
WS1: Time after inputting a phrase address, until SPP/SPM pins are enabled.  
WS2: Time after SPP/SPM pins are enabled, until playback is started.  
WS3: Time after playback is completed, until SPP/SPM pins are disabled.  
WS4: Time after SPP/SPM pins are disabled, until it will be in a standby state.  
WS1-WS4 can be arbitrarily set up between 0 to1020 ms (4 ms unit).  
15/46  
FEDL22Q294-03  
ML22Q294  
Speaker Pin Short Detection Function  
The speaker pin short detection function detect the short-circuit between SPP pin and SPM pin, or between SPP/SPM pin  
and GND during playback.  
When short-circuit of a speaker pin is detected, the playback will be stopped automatically, BUSYB pin will become "H"  
level, and LSI will become in a standby state.  
Speaker short detection prevents IC destruction, but the detection circuit is effective to prevent destruction caused by  
sudden accidents, and is not intended for use in the condition like short detection occurs continuously.  
This function can be set up with the option screen of Speech Utility.  
Please refer to a "Code Option Setting Item" for details.  
Phrase  
Slave  
Phrase  
Slave  
Command  
data  
Command  
data  
SDA  
Address  
Address  
BUSYB*1  
Speaker pin short  
SPP/SPM  
Status  
Hi-Z  
Hi-Z  
Speaker pin short  
Playing  
Speaker pin short  
Playing  
Standby  
Command  
processing  
Command  
processing  
Standby  
Awaiting  
command  
*1When used with default “H” level, CMOS output  
Awaiting  
command  
Forced outage by speaker  
16/46  
FEDL22Q294-03  
ML22Q294  
Commands  
The following commands are used for the LSI. After setting the voice code data in the flash memory of this LSI, be sure  
to use the voice playback command.  
Command  
STOP  
Description  
Stop command.  
The STOP command becomes effective for phrase other than those in Play Once mode and  
Scheduled Play Once mode.  
Disconnection detection command.  
DISCONNECT  
PHRASE  
Speaker disconnection is detected. The STOP command must be input after using the  
DISCONNECT command.  
Playback command.  
Playback phrase is selected from 30 phrases.  
Command configuration  
1-byte command and 2-byte command can be selected.  
When the 2-byte command is selected, the volume can be expanded to 32 levels and the number of phrases can be  
expanded to 62 phrases.  
PHRASE command is allocated with a bit sequence other than the set values for STOP command and DISCONNECT  
command.  
These are set when the voice code data is generated.  
Please refer to a "Code Option Setting Item" for details.  
The command configuration when the initial value (STOP command is set to be 00000b and DISCONNECT command is  
set to be 00001b) is as follows.  
1-byte command (eight levels of volume and 30 phrases)  
First byte  
Command  
D7  
*
D6  
*
D5  
*
D4  
0
D3  
0
D2  
0
D1  
0
D0  
0
STOP  
DISCONNECT  
*
*
*
0
0
0
0
1
V2  
V1  
V0  
0
0
0
1
0
PHRASE  
V2  
V1  
V0  
1
1
1
1
1
2-byte command (initial value: 32 levels of volume and 62 phrases)  
First byte  
Second byte  
Command  
D15 D14 D13 D12 D11 D10  
D9  
*
D8  
*
D7  
*
D6  
*
D5  
0
D4  
0
D3  
0
D2  
0
D1  
0
D0  
0
STOP  
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
DISCONNECT  
*
*
*
*
0
0
0
0
0
1
V4  
V3  
V2  
V1  
V0  
*
*
0
0
0
0
1
0
PHRASE*1  
*
*
*
V4  
V3  
V2  
V1  
V0  
*
*
1
1
1
1
1
1
Note: This bit is not used for command identification, so any value can be set.  
Note 1: When using a 2-byte command, the combination of 0xff in the 1st byte and 0xff in the 2nd byte is ignored.  
For the phrase number 111111b, set the "*" part (arbitrary value) to "0".  
17/46  
FEDL22Q294-03  
ML22Q294  
Any bit sequence can be set for STOP command and DISCONNECT command.  
The following shows examples of a case where a non-initial value is set.  
When STOP command is changed from the initial value, the number of phrase available decreases by one.  
1-byte command (when STOP command is set to be 11111b and DISCONNECT command is set to be 00001b)  
First byte  
Command  
D7  
*
D6  
*
D5  
*
D4  
0
D3  
0
D2  
0
D1  
0
D0  
0
-*1  
DISCONNECT  
*
*
*
0
0
0
0
1
V2  
V1  
V0  
0
0
0
1
0
PHRASE  
STOP  
V2  
*
V1  
*
V0  
*
1
1
1
1
1
1
1
1
0
1
Note 1: 00000b cannot be set to PHRASE command. 29 phrases from 00010b to 11110b can be set to PHRASE  
command.  
2-byte command (when STOP command is set to be 111110b and DISCONNECT command is set to be 000010b)  
First byte  
Second byte  
Command  
D15 D14 D13 D12 D11 D10  
D9  
*
D8  
*
D7  
*
D6  
*
D5  
0
D4  
0
D3  
0
D2  
0
D1  
0
D0  
0
-*1  
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
*
PHRASE  
*
*
*
*
0
0
0
0
0
1
DISCONNECT  
*
*
*
*
*
*
*
0
0
0
0
1
0
V4  
V4  
V4  
*
V3  
V3  
V3  
*
V2  
V2  
V2  
*
V1  
V1  
V1  
*
V0  
V0  
V0  
*
*
*
0
0
0
0
1
1
PHRASE  
*
*
*
*
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
1
0
1
STOP  
PHRASE*2  
*
*
V4  
V3  
V2  
V1  
V0  
*
*
Note: This bit is not used for command identification, so any value can be set.  
Note 1: 00000b cannot be set to PHRASE command. 29 phrases from 00010b to 11110b can be set to PHRASE  
command.  
Note 2: When using a 2-byte command, the combination of 0xff in the 1st byte and 0xff in the 2nd byte is ignored.  
For the phrase number 111111b, set the "*" part (arbitrary value) to "0".  
18/46  
FEDL22Q294-03  
ML22Q294  
STOP command  
1-byte command selectioninitial value)  
command  
*
*
*
0
0
0
*
0
*
0
*
2-byte command selectioninitial value)  
command  
*
*
*
*
*
*
*
0
0
0
0
0
0
*Since it is a bit that is not used to identify the command, it can be set to any value.  
The STOP command is used to stop the playback. BUSYB pin will become “H”, if the playback is stopped.  
The STOP command becomes effective for the phrase waiting to be played in Scheduled Play Once mode, and in  
Scheduled Play modem, Change Immediately Once mode, and Change Immediately mode.  
STOP command used for phrases played back in Play Once mode or Scheduled Play Once mode, the STOP is ignored.  
When STOP command is input in Scheduled Play mode, the playback stops after the phrase is played back to the end.  
When STOP command is input in Change Immediately Once mode or Change Immediately mode, the voice fades out,  
and the playback stops.  
When CSB is not used, input a phrase playback request (PHRASEn command) after the STOP command, after  
confirming the end of the phrase being played (BUSYB="H"), and after tOSST+tCMS has elapsed.  
Operations where STOP command is effective are described below.  
STOP command operation in the case of Scheduled Play Once mode  
PHRASE1  
PHRASE2  
Slave  
STOP COMMAND  
Command  
data  
Command  
Command  
Slave  
Slave  
data  
data  
SDA  
BUSYB*1  
SPP/SPM  
Address  
Address  
Address  
Hi-Z  
Playing (playback phrase 1 to the last)  
Status  
Standby  
Standby  
*1When used with default “H” level, CMOS output  
Command processing  
Awaiting command  
STOP command operation in the case of Scheduled Play mode  
PHRASE  
Slave  
STOP COMMAND  
Command  
data  
Command  
Slave  
data  
SDA  
BUSYB*1  
SPP/SPM  
Address  
Address  
Hi-Z  
Playing (playback phrase to the last)  
Status  
Standby  
Command processing  
Awaiting command  
Standby  
*1When used with default “H” level, CMOS output  
STOP command operation in the case of Change Immediately Once mode or Change Immediately mode  
PHRASE  
STOP COMMAND  
Command  
data  
Command  
Slave  
Address  
Slave  
data  
SDA  
BUSYB*1  
SPP/SPM  
Address  
Hi-Z  
Playing  
Fading out  
Status  
Standby  
Command processing  
Awaiting command  
Standby  
*1When used with default “H” level, CMOS output  
19/46  
FEDL22Q294-03  
ML22Q294  
DISCONNECT command  
1-byte command selectioninitial value)  
command  
*
*
*
0
0
0
*
0
*
1
*
2-byte command selectioninitial value)  
command  
*
*
*
*
*
*
*
0
0
0
0
0
1
*Since it is a bit that is not used to identify the command, it can be set to any value.  
The DISCONNECT command is used to diagnose whether the speaker is disconnected or not.  
The command cannot be used during voice playback. The command shall be used during standby (no playback).  
Disconnection detection result is output to BYSYB pin. "L” is output when the speaker is disconnected, and outputs "H”  
when the speaker is not disconnected. Please input the STOP command to transition to standby state, after you use the  
DISCONNECT command.  
DISCONNECTcommand  
STOP  
Command  
data  
Command  
data  
Slave  
Address  
Slave  
Address  
SDA  
tDCDS  
BUSYB*1  
Status  
Disconnection judgment  
(L: disconnect H: Connect)  
Under speaker disconnection  
detection  
Disconnection detection  
result output  
Standby  
Command processing  
Command processing  
Standby  
Awaiting command  
*1When used with default “H” level, CMOS output  
When no STOP command is input after the execution of DISCONNECT command, the disconnection detection  
automatically stops in one second, and transition to standby occurs.  
DISCONNECTcommand  
Command  
data  
Slave  
Address  
SDA  
tDCDS  
tDCDE  
BUSYB*1  
Status  
Disconnection judgment  
(L: disconnect H: Connect)  
Under speaker disconnection  
Disconnection detection  
result output  
Standby  
detection  
Command processing  
Standby  
Awaiting command  
*1When used with default “H” level, CMOS output  
20/46  
FEDL22Q294-03  
ML22Q294  
PHRASE command  
1-byte command selection  
command  
V2 V1 V0 F4 F3 F2 F1 F0  
2-byte command selection  
command  
*
*
*
V4 V3 V2 V1 V0  
*
*
F5 F4 F3 F2 F1 F0  
*Since it is a bit that is not used to identify the command, it can be set to any value.  
PHRASE command is playback command. Specifies an address of a phrase to be played back.  
Command that is not set to be STOP command or DISCONNECT command is set to be PHRASE command.  
An address of phrase to be played back is set when voice code data is generated with Speech LSI Utility.  
Timings of PHRASE command are shown below.  
Phrase  
Volume  
Command data+Acknowledge  
Slave Address+W(0)+Acknowedge  
SDA  
SCL  
BUSYB*1  
SPP/SPM  
Hi-Z  
Awaiting command  
Playing  
Command  
Status  
Standby  
*1When used with default “H” level, CMOS output  
Set the playback Phrase with F4-F0 or F5-F0.  
1-byte command selectioninitial value)  
F4  
0
F3  
0
F2  
0
F1  
1
F0  
0
Playing Phrase  
Phrase0  
1
1
1
1
1
Phrase29  
2-byte command selectioninitial value)  
F5  
0
F4  
0
F3  
0
F2  
0
F1  
1
F0  
Playing Phrase  
Phrase0  
0
1
1
1
1
1
1
Phrase61  
21/46  
FEDL22Q294-03  
ML22Q294  
The volume can be set up with V2-V0 or V4-V0 set.  
This is used to playback voice with a volume other than one set when the voice code data is generated.  
When 1-byte command is selected.  
V2  
V1  
V0  
Volume [dB]  
Volume set at  
the time of  
0
0
0
generating voice  
code data is  
used*1  
0
0
0
1
1
1
1
0
1
1
0
0
1
1
1
0
1
0
1
0
1
+2.98  
+1.78  
0
-2.25  
-5.28  
-9.99  
-21.04  
*Note 1: For edited phrase, volume set for each registered phrase is used  
When 2-byte command is selected.  
V4  
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
V3  
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
V2  
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
V1  
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
V0  
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Volume [dB]  
+2.98  
V4  
V3  
V2  
V1  
V0  
Volume [dB]  
-3.34  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
+2.70  
+2.40  
+2.10  
+1.78  
+1.45  
+1.11  
+0.76  
+0.39  
+0.00  
-0.41  
-0.83  
-1.28  
-1.75  
-2.25  
-2.77  
-3.94  
-4.58  
-5.28  
-6.04  
-6.87  
-7.79  
-8.82  
-9.99  
-11.34  
-12.94  
-14.90  
-17.44  
-21.04  
-27.31  
Volume set at the  
time of  
generating voice  
code data is  
used*1  
*Note 1: For edited phrase, volume set for each registered phrase is used  
22/46  
FEDL22Q294-03  
ML22Q294  
TIMING DIAGRAMS  
Power-On Timing  
5V  
DVDD  
tVDD  
5V  
SPVDD  
RESET_N  
BUSYB*1  
tRST  
VIH  
VIL  
VOH  
VOL  
Hi-Z  
Indefinite  
OSC  
(internal)  
Oscillation stopped  
Oscillating  
Oscillation stopped  
tINIT  
VOH  
Hi-Z  
Hi-Z  
SPP  
SPM  
VOL  
VOH  
VOL  
Performing a reset  
Initializing  
Standby  
Status  
*1Used with default “H” level, CMOS output  
Turn on DVDD and SPVDD simultaneously, or turn on SPVDD after turning on DVDD.  
Turn on DVDD and SPVDD simultaneously, or turn on SPVDD after turning on DVDD.  
When DVDD or SPVDD falls below recommended operation power supply voltage range, “L” level must be  
input to RESET_N pin.  
Power down timing (RESET_N pin)  
tRST  
RESET_N  
Hi-Z  
BUSYB*1  
Indefinite  
Oscillation  
stopped  
OSC  
(internal)  
Oscillating  
Oscillating  
tINIT  
SPP  
SPM  
Playing  
Initializing  
Standby  
Status  
*1Used with default “H” Level, CMOS output  
Performing a reset  
When DVDD or SPVDD falls below recommended operation power supply voltage range, “L” level must be  
input to RESET_N pin.  
23/46  
FEDL22Q294-03  
ML22Q294  
I2C interface timing  
VIH  
SDA  
VIL  
tF  
tSP  
tR  
tSU;DAT  
tHD;STA  
tF  
tR  
tLOW  
VIH  
VIL  
tHIGH  
tHD;DAT  
SCL  
tHD;STA  
tSU;STA  
tSU;STO  
Sr  
S
P
SStart condition  
Slave AddressSlave Address  
AAcknowledge  
Command DataCommand  
PStop condition  
Timing chart for 1-byte configuration command input  
SCL  
tCKST  
tCKST  
A6  
W
A
A
A5 A4 A3 A2 A1 A0  
Slave Address  
D7 D6D5 D4 D3D2 D1 D0  
SDA  
A
Command Data  
A
P
S
Timing chart for 2-byte configuration command input  
SCL  
tCKST  
tCKST  
D9 D8  
tCKST  
D15 D13  
D11  
A6 A5 A4 A3 A2 A1 A0 W  
Slave Address  
A
A
A
D7 D6D5 D4 D3D2 D1 D0  
SDA  
D14 D12 D10  
P
A
A
Command Data  
A
Command Data  
S
BUSYB output timing  
SCL  
A6 A5 A4 A3 A2 A1 A0 W  
A
D7 D6D5 D4 D3D2 D1 D0  
A
SDA  
P
Slave Address  
A
Command Data  
A
S
tCB  
BUSYB  
24/46  
FEDL22Q294-03  
ML22Q294  
CSB use mode  
Play Oncemode timing  
After playback of phrase (m) ends, playback request for the next phrase (n) is accepted and the phrase (n) is played back.  
All the commands become invalid during playback of phrase (m).  
CSB*1  
Slave address +  
D7-D0 or D15-D0  
+ Acknowledge  
tPUP1  
SDA  
SCL  
Write bit + Acknowledge  
tCB  
VOH  
VOL  
BUSYB*2  
OSC  
(internal)  
Oscillating  
tPLBF  
WS1  
WS2  
tVCYC  
Stabilizing oscillation  
Speaker enable  
(internal)  
SPP  
SPM  
Hi-Z  
Hi-Z  
Awaiting command  
Playing  
Status  
Standby  
Command processing  
VIH  
CSB*1  
VIL  
Slave address + D7-D0 or D15-D0  
tPUP1  
tCSW  
SDA  
SCL  
Write bit +  
+ Acknowledge  
tCB  
VOH  
BUSYB*2  
VOL  
OSC  
(internal)  
Oscillating  
Oscillating  
tPLAF  
tOSST  
tPLBF  
WS2  
WS3 WS4  
WS1  
Stabilizing oscillation  
Speaker  
enable  
(internal)  
SPP  
Hi-Z  
Hi-Z  
SPM  
Playing  
Playing  
Command processing  
Awaiting command  
Standby  
Status  
Awaiting command  
Awaiting oscillation stop  
*1Used with default “H” Level  
*2Used with default “H” Level, CMOS output  
25/46  
FEDL22Q294-03  
ML22Q294  
Scheduled Play Once mode and Scheduled Play mode Timing (Continuous Play)  
After inputting the next PHRASEn command (Phrase (n)), a phrase (Phrase (m)) is played back to the last  
and the Phrase (n) playback is started.  
*1  
tNCM2  
CSB*1  
Phrase (n)  
Phrase (m)  
D7-D0 or D15-D0  
+ Acknowledge  
Slave address +  
Slave address +  
D7-D0 or D15-D0  
tPUP1  
SDA  
SCL  
Write bit + Acknowledge  
Write bit + Acknowledge  
+ Acknowledge  
tNCM1  
tCB  
VOH  
VOL  
BUSYB*2  
OSC  
(internal)  
Oscillating  
WS1(m)  
WS2(m)  
tPLBF  
tVCYC  
Stabilizing oscillation  
Speaker enable  
(internal)  
SPP  
SPM  
Hi-Z  
Hi-Z  
Awaiting command  
Playing phrase (m)  
Status  
Command processing  
Standby  
CSB*1  
SDA  
SCL  
VOH  
BUSYB*2  
VOL  
OSC  
(internal)  
Oscillating  
WS3(n)  
tVCYC  
tVCYC  
tPLAF  
WS4(n)  
tOSST  
Speaker enable  
(internal)  
SPP  
SPM  
Hi-Z  
Hi-Z  
Playing  
Playing phrase (n)  
Awaiting command  
Status  
*1Used with default “H” Level  
*2Used with default “H” Level, CMOS output  
Awaiting oscillation stop  
Standby  
Under Scheduled Play mode, playback is stopped by STOP command.  
*1: In Scheduled Play Once mode, the phrase (n) is played back immediately after the end of the playback of the phrase (m), in  
response to an input of a playback request (PHRASE command) for the next phrase (phrase (n)) within tNCM  
.
26/46  
FEDL22Q294-03  
ML22Q294  
Change Immediately Once mode and Change Immediately mode Timing (Continuous Play)  
After inputting the next PHRASEn command(Phrase(n)), fade-out of the playback(Phrase(m)) is carried  
out and thePhrase(n) playback is started.  
tNCM1  
CSB*1  
Phrase (n)  
D7-D0 or D15-D0  
+ Acknowledge  
Phrase (m)  
D7-D0 or D15-D0  
+ Acknowledge  
Slave address +  
Slave address +  
tPUP1  
SDA  
SCL  
Write bit + Acknowledge  
Write bit + Acknowledge  
tCB  
VOH  
VOL  
BUSYB*2  
OSC  
(internal)  
Oscillating  
tPLBF  
WS1(m)  
WS2(m)  
Stabilizing oscillation  
Speaker enable  
(internal)  
Hi-Z  
Hi-Z  
SPP  
SPM  
Awaiting command  
Playing phrase (m)  
Status  
Command processing  
Standby  
CSB*1  
SDA  
SCL  
tFDO  
Phrase (m) voice stop  
Oscillating  
VOH  
BUSYB*2  
VOL  
OSC  
(internal)  
tOSST  
tVCYC  
tPLAF WS3(n)  
WS4(n)  
Speaker enable  
(internal)  
SPP  
SPM  
Hi-Z  
Hi-Z  
Status  
Playing  
Fade out processing  
Playing phrase (n)  
Awaiting command  
*1Used with default “H” Level  
*2Used with default “H” Level, CMOS output  
Awaiting oscillation stop  
Standby  
Under Change Immediately mode, playback is stopped by STOP command.  
27/46  
FEDL22Q294-03  
ML22Q294  
Scheduled Play Once mode and Scheduled Play mode Timing voice stop timing  
After STOP command is input, the phrase is played back until the end, and the playback stops.  
tNCM1  
CSB*1  
Phrase (m)  
D7-D0 or D15-D0  
+ Acknowledge  
STOP command  
Slave address +  
Slave address +  
D7-D0 or D15-D0  
tPUP1  
SDA  
SCL  
Write bit + Acknowledge  
Write bit + Acknowledge  
+ Acknowledge  
tCB  
VOH  
VOL  
BUSYB*2  
OSC  
(internal)  
Oscillating  
tPLBF  
WS1  
WS2  
Stabilizing oscillation  
Speaker enable  
(internal)  
SPP  
SPM  
Hi-Z  
Hi-Z  
Awaiting command  
Playing phrase  
Status  
Command processing  
Standby  
CSB*1  
SDA  
SCL  
VOH  
BUSYB*2  
VOL  
OSC  
(internal)  
Oscillating  
WS3(n)  
WS4(n)  
tPLAF  
tOSST  
Speaker enable  
(internal)  
Hi-Z  
Hi-Z  
Standby  
SPP  
SPM  
Playing  
(Play until the end of phrase)  
Awaiting command  
Status  
Awaiting oscillation  
stop  
*1Used with default “H” Level  
*2Used with default “H” Level, CMOS output  
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FEDL22Q294-03  
ML22Q294  
Timing which stops the playback in Change Immediately mode and Change Immediately Once mode  
After STOP command is input, the voice fades out, and the playback stops.  
tNCM1  
CSB*1  
STOP  
Phrase (m)  
D7-D0 or D15-D0  
+ Acknowledge  
Slave address +  
Slave address +  
tPUP1  
SDA  
SCL  
Write bit + Acknowledge  
Write bit + Acknowledge  
tCB  
VOH  
VOL  
BUSYB*2  
OSC  
(internal)  
Oscillating  
tPLBF  
WS1  
WS2  
Stabilizing oscillation  
Speaker enable  
(internal)  
SPP  
SPM  
Hi-Z  
Hi-Z  
Awaiting command  
Playing phrase  
Status  
Command processing  
Standby  
CSB*1  
STOP command  
D7-D0 or D15-D0  
+ Acknowledge  
SDA  
SCL  
tFDO  
VOH  
BUSYB*2  
VOL  
OSC  
(internal)  
Oscillating  
WS3 WS4  
tPLAF  
tOSST  
Speaker enable  
(internal)  
SPP  
SPM  
Hi-Z  
Hi-Z  
Playing  
Fade out processing  
Awaiting command  
Standby  
Status  
Awaiting  
*1Used with default “H” Level  
oscillation stop  
*2Used with default “H” Level, CMOS output  
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FEDL22Q294-03  
ML22Q294  
Disconnection detection timing  
VIH  
CSB*1  
VIL  
DISCONNECT command  
Slave address +  
D7-D0 or D15-D0  
tPUP1  
SDA  
SCL  
Write bit + Acknowledge  
+ Acknowledge  
tNCM1  
tCB  
tDCD(min)  
VOH  
VOL  
BUSYB*2  
Stabilizing oscillation  
Oscillating  
OSC  
(internal)  
Awaiting command  
Command processing  
Disconnection detecting  
Status  
Standby  
VIH  
VIL  
CSB*1  
STOP command  
Slave address +  
Write bit + Acknowledge  
D7-D0 or D15-D0  
+ Acknowledge  
tNCM1  
SDA  
SCL  
tCB  
tOSST  
BUSYB*2  
OSC  
(internal)  
Oscillating  
Disconnection detecting  
Command processing  
Standby  
Status  
Awaiting oscillation stop  
Awaiting command  
*1Used with default “H” Level  
*2Used with default “H” Level, CMOS output  
Speaker short detection timing  
tSD  
VOH  
BUSYB*1  
VOL  
tOSST  
OSC  
(internal)  
Oscillating  
Speaker enable  
(internal)  
Speaker short  
detection  
(internal)  
Hi-Z  
Hi-Z  
SPP  
SPM  
Playing  
Short detection processing  
Standby  
*1Used with default “H” Level, CMOS output  
Status  
30/46  
FEDL22Q294-03  
ML22Q294  
CSB unused mode  
Play Oncemode/Scheduled Play Once/Change Immediately Once timing  
After playback of phrase (m) ends, playback request for the next phrase (n) is accepted and the phrase (n) is played back.  
All the commands become invalid during playback of phrase (m).  
After BUSYB has shifted to "H" level, input the PHRASE command after tOSST+tCMS has elapsed.  
CSB  
“H”or”L” fix  
Slave address +  
D7-D0 or D15-D0  
+ Acknowledge  
tPUP1  
SDA  
SCL  
Write bit + Acknowledge  
tCB  
VOH  
VOL  
BUSYB*1  
OSC  
(internal)  
Oscillating  
tPLBF  
WS1  
WS2  
tVCYC  
Oscillation stable  
Speaker amplifier  
enable (internal)  
SPP  
SPM  
Hi-Z  
Hi-Z  
Standby  
Awaiting command  
Playing  
Status  
Command processing  
定中  
CSB  
“H”or”L”fix  
Slave address +  
Write bit +  
D7-D0 or D15-D0  
+ Acknowledge  
tPUP1  
SDA  
SCL  
tCMS  
tCB  
VOH  
BUSYB*1  
VOL  
OSC  
(internal)  
Oscillating  
Oscillating  
tPLAF  
tOSST  
tPLBF  
WS2  
WS3 WS4  
WS1  
Oscillation stable  
Speaker amplifier  
enable (internal)  
SPP  
SPM  
Hi-Z  
Hi-Z  
Playing  
Awaiting oscillation stop  
Standby  
Playing  
Status  
Awaiting  
Command processing  
*1Used with default “H” Level, CMOS output  
31/46  
FEDL22Q294-03  
ML22Q294  
Scheduled Play Once mode and Scheduled Play mode Timing (Continuous Play)  
After inputting the next PHRASEn command (Phrase (n)), a phrase (Phrase (m)) is played back to the last  
and the Phrase (n) playback is started.  
1  
tNCM2  
“H”or”L”fix  
CSB  
Phrase (n)  
D7-D0 or D15-D0  
Phrase (m)  
Slave address +  
Slave address +  
D7-D0 or D15-D0  
tPUP1  
SDA  
SCL  
tNCM1  
Write bit + Acknowledge  
Write bit + Acknowledge  
+ Acknowledge  
+ Acknowledge  
tCB  
VOH  
VOL  
BUSYB*1  
OSC  
(internal)  
Oscillating  
WS1(m)  
WS2(m)  
tPLBF  
tVCYC  
Speaker enable  
(internal)  
Stabilizing oscillation  
SPP  
SPM  
Hi-Z  
Hi-Z  
Standby  
Awaiting command  
Playing phrase (m)  
Status  
Command processing  
CSB  
“H”or”L”fix  
SDA  
SCL  
VOH  
BUSYB*1  
VOL  
OSC  
(internal)  
Oscillating  
WS3(n)  
tVCYC  
tVCYC  
tPLAF  
WS4(n) tOSST  
Speaker enable  
(internal)  
SPP  
SPM  
Hi-Z  
Hi-Z  
Playing  
Playing phrase (n)  
Awaiting oscillation stop  
*1Used with default “H” Level, CMOS output  
Status  
Standby  
Under Scheduled Play mode, playback is stopped by STOP command.  
*1: In Scheduled Play Once mode, the phrase (n) is played back immediately after the end of the playback of the phrase (m), in  
response to an input of a playback request (PHRASE command) for the next phrase (phrase (n)) within tNCM  
.
32/46  
FEDL22Q294-03  
ML22Q294  
Change Immediately Once mode and Change Immediately mode Timing (Continuous Play)  
After inputting the next PHRASEn command(Phrase(n)), fade-out of the playback(Phrase(m)) is carried  
out and thePhrase(n) playback is started.  
tNCM1  
“H”or”L”fix  
CSB  
Phrase (m)  
Phrase (n)  
D7-D0 or D15-D0  
+ Acknowledge  
Slave address +  
Slave address +  
D7-D0 or D15-D0  
tPUP1  
SDA  
SCL  
Write bit + Acknowledge  
Write bit + Acknowledge  
+ Acknowledge  
tCB  
VOH  
VOL  
BUSYB*1  
OSC  
(internal)  
Oscillating  
tPLBF  
WS1(m)  
WS2(m)  
Stabilizing oscillation  
Speaker enable  
(internal)  
SPP  
SPM  
Hi-Z  
Hi-Z  
Standby  
Awaiting command  
Playing phrase (m)  
Status  
Command processing  
CSB  
“H”or”L”fix  
SDA  
SCL  
tFDO  
Phrase (m) voice stop  
Oscillating  
VOH  
BUSYB*1  
VOL  
OSC  
(internal)  
tOSST  
tVCYC  
tPLAF WS3(n)  
WS4(n)  
Speaker enable  
(internal)  
SPP  
SPM  
Hi-Z  
Hi-Z  
Status  
Playing  
Fade out processing  
Playing phrase (n)  
Standby  
Awaiting oscillation stop  
*1Used with default “H” Level, CMOS output  
Under Change Immediately mode, playback is stopped by STOP command.  
33/46  
FEDL22Q294-03  
ML22Q294  
Scheduled Play Once mode and Scheduled Play mode Timing voice stop timing  
After STOP command is input, the phrase is played back until the end, and the playback stops.  
VIH  
tNCM1  
“H”or”L”fix  
CSB  
VIL  
STOP command  
Phrase (m)  
D7-D0 or D15-D0  
+ Acknowledge  
Slave address +  
Slave address +  
D7-D0 or D15-D0  
tPUP1  
SDA  
SCL  
Write bit + Acknowledge  
Write bit + Acknowledge  
+ Acknowledge  
tCB  
VOH  
VOL  
BUSYB*1  
OSC  
(internal)  
Oscillating  
tPLBF  
WS1  
WS2  
Stabilizing oscillation  
Speaker enable  
(internal)  
SPP  
SPM  
Hi-Z  
Hi-Z  
Standby  
Awaiting command  
Playing phrase  
Status  
Command processing  
VIH  
CSB  
“H”or”L”fix  
VIL  
VIH  
VIL  
SDA  
SCL  
VIH  
VIL  
VOH  
VOL  
BUSYB*1  
OSC  
(internal)  
Oscillating  
WS3(n)  
WS4(n)  
tPLAF  
tOSST  
Speaker enable  
(internal)  
SPP  
Hi-Z  
Hi-Z  
SPM  
Standby  
Playing  
(Play until the end of phrase)  
Awaiting oscillation stop  
Status  
*1Used with default “H” Level, CMOS output  
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FEDL22Q294-03  
ML22Q294  
Timing which stops the playback in Change Immediately mode and Change Immediately Once mode  
After STOP command is input, the voice fades out, and the playback stops.  
VIH  
“H”or”L”fix  
tNCM1  
CSB  
VIL  
STOP  
Slave address +  
Phrase (m)  
Slave address +  
D7-D0 or D15-D0  
+ Acknowledge  
tPUP1  
SDA  
SCL  
Write bit + Acknowledge  
Write bit + Acknowledge  
tCB  
VOH  
VOL  
BUSYB*1  
OSC  
(internal)  
Oscillating  
tPLBF  
WS1  
WS2  
Stabilizing  
oscillation  
Speaker enable  
(internal)  
SPP  
SPM  
Hi-Z  
Hi-Z  
Standby  
Awaiting command  
Playing phrase  
Status  
Command processing  
CSB  
“H”or”L”fix  
STOP command  
D7-D0 or D15-D0  
SDA  
SCL  
+ Acknowledge  
tFDO  
VOH  
VOL  
BUSYB*1  
OSC  
(internal)  
Oscillating  
WS3  
WS4  
tPLAF  
tOSST  
Speaker enable  
(internal)  
Hi-Z  
SPP  
SPM  
Hi-Z  
Playing  
Fade out processing  
Awaiting oscillation stop  
*1Used with default “H” Level, CMOS output  
Standby  
Status  
35/46  
FEDL22Q294-03  
ML22Q294  
Disconnection detection timing  
VIH  
CSB  
“H”or”L”fix  
VIL  
DISCONNECT command  
Slave address +  
D7-D0 or D15-D0  
tPUP1  
SDA  
SCL  
Write bit + Acknowledge  
+ Acknowledge  
tNCM1  
tCB  
tDCD(min)  
VOH  
VOL  
BUSYB*1  
Stabilizing  
oscillation  
OSC  
(internal)  
Oscillating  
Standby  
Awaiting command  
Disconnection detecting  
Status  
Command processing  
VIH  
VIL  
CSB  
“H”or”L”fix  
tNCM1  
STOP command  
Slave address +  
D7-D0 or D15-D0  
SDA  
SCL  
Write bit + Acknowledge  
+ Acknowledge  
tCB  
tOSST  
BUSYB*1  
OSC  
(internal)  
Oscillating  
Disconnection detecting  
Standby  
Status  
Awaiting oscillation stop  
Command processing  
*1Used with default “H” Level, CMOS output  
Speaker short detection timing  
tSD  
VOH  
BUSYB*1  
VOL  
tOSST  
OSC  
発振中  
(internal)  
Speaker enable  
(internal)  
Speaker short  
detection  
(internal)  
Hi-Z  
Hi-Z  
SPP  
SPM  
Playing  
Short detection processing  
Standby  
Status  
*1Used with default “H” Level, CMOS output  
36/46  
FEDL22Q294-03  
ML22Q294  
Code Option Setting Item  
Items set on Code Option Setting screen for Speech LSI Utility are as follows.  
Speaker pin short detection function  
(Not used)  
Use of speaker pin short detection function  
(Used)  
Command setting  
1 byte (communicate with 1-byte command)  
2 byte (communicate with 2-byte command)  
Command type  
STOP/DISCONNECT Command  
Standard  
Command bit sequence  
Set 0_0000b (1-byte command)  
Set 00_0000b (2-byte command)  
Set 0_0001b (1-byte command)  
Set 00_0001b (2-byte command)  
Set any bit sequence  
STOP command  
DISCONNECT command  
STOP command  
Custom  
Set any bit sequence  
(Set value different from STOP command)  
DISCONNECT command  
BUSYB Pins Setting  
Use of BUSYB  
Initial State  
L level Output  
H level Output  
Condition  
BUSYB pin status  
Fixed to “L” output  
Fixed to “H” output  
*
*
(Not used)  
CMOS  
Output initial value “L” with CMOS output  
Output initial value “L” with Nch open drain  
output  
Output initial value HiZ with Pch open drain  
output  
Nch Open Drain  
Pch Open Drain  
L level Output  
Hi-Z  
CMOS  
Hiz output  
(Used)  
Output initial value “H” with CMOS output  
Output initial value HiZ with Nch open drain  
output  
Nch Open Drain  
H level Output  
Output initial value “H” with Pch open drain  
output  
Hiz output  
Pch Open Drain  
Hi-Z  
*: Setting value invalid  
37/46  
FEDL22Q294-03  
ML22Q294  
I2C Setting  
Use CSB  
Initial State  
*
Condition  
*
CSB pin status  
Not used  
(Not used)  
Fix to “H” level or “L” level  
Used with pull-up input  
Start internal oscillation with pin input “H” level  
Used with high impedance input  
Pch Pull-up  
Hi-Z  
L level Input  
H level Input  
Start internal oscillation with pin input “H” level  
(Used)  
Used with pull-up input  
Start internal oscillation with pin input “L” level  
Used with high impedance input  
Pch Pull-up  
Hi-Z  
Start internal oscillation with pin input “L” level  
*: Setting value invalid  
Slave address  
Set any value from 00h to 7 Fh  
38/46  
FEDL22Q294-03  
ML22Q294  
Event Setting Item  
Items set on Event Setting screen for Speech LSI Utility are as follows.  
Playback mode  
Set playback mode suitable for target playback, with reference to “Playback mode” in FUNCTIONAL DESCRIPTION.  
Volume setup  
Set playback mode suitable for target playback, with reference to “Volume setup function” in FUNCTIONAL  
DESCRIPTION.  
Setting Wait time before and after volume playback  
Set desired Wait time with reference to “Function of setting wait time before and after playback (WS1, WS2, WS3,  
WS4)”.  
39/46  
FEDL22Q294-03  
ML22Q294  
PULL-UP RESISTOR VALUE OF SCL AND SDA PIN  
The pull-up resistor value of SCL and SDA pin is computed as follows.  
Minimum Value RP.min)  
RP.min = (VDD - VOLmax)/IOL  
VDD: Power supply voltage  
VOL.max: The maximum output "L" level of a driver  
IOL: Sink current of a driver  
For example, in this case of VDD =5 V, VOL.max=0.4 V, IOL =3 mA,  
RP.min = (5 V - 0.4 V)/3 mA ≈ 1.5kΩ  
holds.  
Maximum Value (RP.max)  
RP.max = 300 ns/[maximum capacitance of bus (F)]  
For example, when the maximum capacitance of the bus is 100 pF,  
RP.max = 300 ns/100 pF = 3kΩ  
holds.  
Pull-up resistor must be inserted between this pin and DVDD  
TERMINATION OF THE VDDL PIN  
The VDDL pin is the regulator output that is power supply pin for the internal logic circuits. Connect a capacitor between  
this pin and the ground in order to prevent noise generation and power fluctuation.  
The recommended capacitance value is shown below. However, it is important to evaluate and decide using the own  
board.  
Also, start the next operation after each output voltage is stabilized.  
Recommended  
capacitance value  
Pin  
Remarks  
VDDL  
10 µF ±20%  
The larger the connection capacitance, the longer the settling time.  
40/46  
FEDL22Q294-03  
ML22Q294  
POWER SUPPLY WIRING  
The power supplies of this LSI are divided into the following two:  
Power supply for logic circuitry (: DVDD)  
Power supply for speaker amplifier (: SPVDD)  
The example of power connection is shown below  
DVDD  
DGND  
SPVDD  
SPGND  
5V  
DVDD  
DGND  
3V  
SPVDD  
SPGND  
5V  
- Turn on DVDD and SPVDD simultaneously, or turn on SPVDD after turning on DVDD.  
- Turn off DVDD and SPVDD simultaneously, or turn off DVDD after turning on SPVDD.  
41/46  
FEDL22Q294-03  
ML22Q294  
APPLICATION CIRCUIT  
DVDD  
RP  
RESET_N  
MCU  
CSB  
SCL  
SDA  
BUSYB  
SPP  
SPM  
TEST  
VPP  
SPVDD  
DVDD  
5V  
0.1uF  
10uF  
VDDL  
0.1uF  
DGND  
SPGND  
42/46  
FEDL22Q294-03  
ML22Q294  
PACKAGE DIMENSION  
Notes for Mounting the Surface Mount Type Package  
The surface mount type packages are very susceptible to heat in reflow mounting and humidity absorbed in storage. Therefore,  
before you perform reflow mounting, contact a ROHM sales office for the product name, package name, pin number, package  
code and desired mounting conditions (reflow method, temperature and times).  
PCB Layer  
PCB  
JEDEC 4layers  
JEDEC 2layers  
(W/L/t= 76.2 / 114.3 / 1.6 (mm))  
Air cooling conditions  
Calm(0m/sec)  
0.28[W]  
63.7[°C /W]  
69.4[°C /W]  
0.48[°C /W]  
Heat resistance (θja)  
Heat resistance (θjc)  
Maximum power consumption of LSI (PMax)  
At 1W into 8Ω playback  
0.46[/W]  
TjMax of this LSI is 125 °C. TjMax is expressed with the following formulas.  
TjMax=TaMax+θja×PMax  
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ML22Q294  
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FEDL22Q294-03  
ML22Q294  
REVISION HISTORY  
Page  
Previou Current  
Document No  
Date  
Description  
s
Edition  
Edition  
FEDL22Q294-01  
FEDL22Q294-02  
Mar 5, 2021  
-
-
Formal 1st edition.  
SPP, SPM terminal output short-circuit current value change.  
Mar 30, 2021  
6
6
(Before change)  
(After change)  
300mA  
600mA  
SCL Fixed an error in the tSCL condition item.  
8
8
(Before change)  
(After change)  
I2C high speed mode  
I2C Fast mode  
8
9
8
9
Add clock stretch time tCKST.  
BUSYB signal deleted from I2C timing chart.  
15,16,  
19,20  
16  
15,16,  
19,20  
16  
Changed SI terminal to SDA terminal.  
Speaker short-circuit detection warning added.  
Added a note on using commands.  
FEDL22Q294-03  
Oct 4, 2021  
17  
19  
24  
24  
17  
19  
24  
24  
Added a note on phrase playback after the STOP command.  
Clock stretch time Timing chart added  
BUSYB output timing added.  
Added a note for phrase playback after transitioning to BUSYB "H"  
level.  
31  
31  
43  
-
43  
44  
Describe the thermal resistance information of the package  
Added "Mounting area for package lead soldering to PC boards".  
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ML22Q294  
Notes  
1) The information contained herein is subject to change without notice.  
2) When using LAPIS Technology Products, refer to the latest product information (data sheets, user’s manuals, application  
notes, etc.), and ensure that usage conditions (absolute maximum ratings, recommended operating conditions, etc.) are within  
the ranges specified. LAPIS Technology disclaims any and all liability for any malfunctions, failure or accident arising out of  
or in connection with the use of LAPIS Technology Products outside of such usage conditions specified ranges, or without  
observing precautions. Even if it is used within such usage conditions specified ranges, semiconductors can break down and  
malfunction due to various factors. Therefore, in order to prevent personal injury, fire or the other damage from break down or  
malfunction of LAPIS Technology Products, please take safety at your own risk measures such as complying with the  
derating characteristics, implementing redundant and fire prevention designs, and utilizing backups and fail-safe procedures.  
You are responsible for evaluating the safety of the final products or systems manufactured by you.  
3) Descriptions of circuits, software and other related information in this document are provided only to illustrate the standard  
operation of semiconductor products and application examples. You are fully responsible for the incorporation or any other  
use of the circuits, software, and information in the design of your product or system. And the peripheral conditions must be  
taken into account when designing circuits for mass production. LAPIS Technology disclaims any and all liability for any  
losses and damages incurred by you or third parties arising from the use of these circuits, software, and other related  
information.  
4) No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of LAPIS Technology  
or any third party with respect to LAPIS Technology Products or the information contained in this document (including but  
not limited to, the Product data, drawings, charts, programs, algorithms, and application examples, etc.). Therefore LAPIS  
Technology shall have no responsibility whatsoever for any dispute, concerning such rights owned by third parties, arising out  
of the use of such technical information.  
5) The Products are intended for use in general electronic equipment (AV/OA devices, communication, consumer systems,  
gaming/entertainment sets, etc.) as well as the applications indicated in this document. For use of our Products in applications  
requiring a high degree of reliability (as exemplified below), please be sure to contact a LAPIS Technology representative and  
must obtain written agreement: transportation equipment (cars, ships, trains, etc.), primary communication equipment, traffic  
lights, fire/crime prevention, safety equipment, medical systems, servers, solar cells, and power transmission systems, etc.  
LAPIS Technology disclaims any and all liability for any losses and damages incurred by you or third parties arising by using  
the Product for purposes not intended by us. Do not use our Products in applications requiring extremely high reliability, such  
as aerospace equipment, nuclear power control systems, and submarine repeaters, etc.  
6) The Products specified in this document are not designed to be radiation tolerant.  
7) LAPIS Technology has used reasonable care to ensure the accuracy of the information contained in this document. However,  
LAPIS Technology does not warrant that such information is error-free and LAPIS Technology shall have no responsibility  
for any damages arising from any inaccuracy or misprint of such information.  
8) Please use the Products in accordance with any applicable environmental laws and regulations, such as the RoHS Directive.  
LAPIS Technology shall have no responsibility for any damages or losses resulting non-compliance with any applicable laws  
or regulations.  
9) When providing our Products and technologies contained in this document to other countries, you must abide by the  
procedures and provisions stipulated in all applicable export laws and regulations, including without limitation the US Export  
Administration Regulations and the Foreign Exchange and Foreign Trade Act..  
10) Please contact a ROHM sales office if you have any questions regarding the information contained in this document or LAPIS  
Technology's Products.  
11) This document, in part or in whole, may not be reprinted or reproduced without prior consent of LAPIS Technology.  
(Note) “LAPIS Technology” as used in this document means LAPIS Technology Co., Ltd.  
Copyright 2021 LAPIS Technology Co., Ltd.  
2-4-8 Shinyokohama, Kouhoku-ku, Yokohama 222-8575, Japan  
https://www.lapis-tech.com/en/  
46/46  

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